I've noticed a few times, while holding the ball, an opposing ship will get close enough to just barely not collide with mine; the ball will appear to momentarily dislodge from its seat (maybe half a ball's distance) and then quickly spring back.

If it helps, it also happened once when I was flying with the ball and the host paused the game, the ball froze the same distance off the ball seat and stayed there until the game was unpaused where it returned immediately to being fully seated.

It's obviously not a major issue but I thought it best to document it; I would sooner fix the glitch where the ball jumps when it passes too close a wall's corner.